Compliance
Building a governance audit trail
If you cannot show which transaction implemented which vote, you do not have governance - you have a forum.
What a complete record contains
Proposal text, encoded payload, vote tallies, signer list, timelock timestamps, execution hash and the chain it settled on.
Why it matters beyond compliance
New contributors onboard from the record, delegates are evaluated against it, and disputes end with it.
Make it immutable by construction
Derive the record from execution itself rather than writing it afterwards by hand.